1) Fiber Allocation Scheme
Fiber number | Tube number | Fiber per tube | Fiber type |
2-24 | 1 | 2-24 F/Tube | OS1,OS2,OM1,OM2,OM3,OM4 |
2) Cable construction details
Items | Description |
Number of fiber | 2-24 cores |
Moisture Barrier | Water blocking system |
Steel wire | Number | 2 |
diameter | 0.8 mm |
Loose tube | material | PBT |
diameter | Ф2.2mm(outer/inner) |
Tube-filling | material | Tube filling compound |
Outer sheath | material | PE,LSZH( can be required) |
color | Black (can be required) |
3) Standard color of fiber and tube
The color code of the tubes and the individual fibers, shall be in accordance with the table as below:
Standard Colour Identification |
|
No. | 1 | 2 | 3 | 4 | 5 | 6 |
Color | Blue | Orange | Green | Brown | Slate | White |
No. | 7 | 8 | 9 | 10 | 11 | 12 |
Color | Red | Black | Yellow | Violet | Pink | Aqua |
Color 13~24 will be marked with a black tracer.For black color no need marked black tracer, will use nature color instead. |
Note: The color can be required by customers.
4) Cable Mechanical characteristic
Items | Cable diameter | Weight |
2 cores to 24 cores | 8.0±0.3mm | 65±10kg/km |
Installation Temperature range | -15--+60℃ |
Operation and transport temperature | -40-+70℃ |
Min Bending Radius(mm) | Long term | 10D |
short term | 20D |
Allowable Tensile Strength(N) | Long term | 600 |
short term | 1500 |
Crush Load (N/100mm) | Long term | 300 |
short term | 1000 |
5) Requirement for Order
(1) Fiber sort: Single mode:G652,G655,G657, Multi mode:OM1,OsM2,OM3,OM4.
(2) Fiber brand: YOFC, Corning, Fiberhome,Fujikura,OFS etc.
(3) The fiber and tube color: according to stranded color, can be required.
(4) The cable Size: shall be in accordance with the table, can be required.
(5) Length of cable: generally is 2KM, can be required.
(6) Other requirement: can be negotiated.
6) Fiber Characteristic
Fiber Style | Unit | SM 9/125 | MM 50/125 | MM 62.5/125 |
Condition | nm | 1310/1550 | 850/1300 | 850/1300 |
Attenuation | dB/km | ≤0.34/0.20 | ≤3.0/1.0 | ≤3.0/1.0 |
Dispersion | 1310nm | Ps/(nm*km) | ≤18 | ..... | ..... |
1550nm | Ps/(nm*km) | ≤22 | ..... | ..... |
Bandwidth | 850nm | MHZ. KM | ..... | ≧400 | ≧160 |
1300nm | MHZ. KM | ..... | ≧800 | ≧500 |
Zero dispersion wavelength | nm | ≧1302, ≤1322 | ..... | ..... |
Zero dispersion slope | nm | ≤0.091 | ..... | ..... |
PMD Maximum Individual Fiber | Ps/km | ≤0.2 | ..... | ..... |
PMD Design Link Value | Ps(nm2*km) | ≤0.08 | ..... | ..... |
Fiber cutoff wavelength λc | nm | ≧1180, ≤1330 | ..... | ..... |
Cable cutoff wavelength λcc | nm | ≤1260 | ..... | ..... |
MFD | 1310nm | um | 9.2±0.4 | ..... | ..... |
1550nm | um | 10.4±0.8 | ..... | ..... |
Numerical Aperture(NA) |
| ...... | 0.200±0.015 | 0.275±0.015 |
Step(mean of bidirectional measurement) | dB | ≤0.05 | ≤0.10 | ≤0.10 |
Irregularities over fiber length and point discontinuity | dB | ≤0.05 | ≤0.10 | ≤0.10 |
Difference backscatter coefficient | dB/km | ≤0.03 | ≤0.08 | ≤0.10 |
Attenuation uniformity | dB/km | ≤0.01 | ....... | ....... |
Core diameter | um | ...... | 50±1.0 | 62.5±2.5 |
Cladding diameter | um | 125.0±0.1 | 125.0±0.1 | 125.0±0.1 |
Cladding non-circularity | % | ≤1.0 | ≤1.0 | ≤1.0 |
Coating diameter | um | 242±7 | 242±7 | 242±7 |
Coating/chaffinch concentrically error | um | ≤12.0 | ≤12.0 | ≤12.0 |
Coating non circularity | % | ≤6.0 | ≤6.0 | ≤6.0 |
Core/cladding concentricity error | um | ≤0.6 | ≤1.5 | ≤1.5 |
Curl(radius) | um | ≤4 | ..... | ..... |